A good night's rest boosts muscle-building potential. Successful weight training requires a great deal more than spending countless hours at the gym. To gain lean muscle mass, you also need to have a healthy diet and ample rest for your muscles to grow. Exactly how much sleep you need may vary for each person. but lacking in sleep will have a negative impact on your muscle growth and ability to put your best effort forth at the gym. If you do not get a sufficient amount of sleep for your body, you may begin to slow down how well you store glycogen, this means you will run out of fuel when you need it most. Make sure you are well rested and that you don't wake up feeling "groggy". You should feel rested when you wake up in the morning. starting your day with a good night's rest is a great way to start the day. Noxqsez! GET MORE SLEEP!